We really hope this isn't true, but according to sources close to Mary Tyler Moore, she's losing her battle with diabetes.

Apparently the 75-year-old star is going blind, has difficulty walking and suffers from life-threatening heart and kidney problems.

Ugh, we are so sad about this, and these are the hard-to-hear things that the source had to say:

“Poor Mary is not doing well at all. It’s heartbreaking to see her so weak. Her health has been declining for years and with the way things have been going recently, it almost looks like she won’t live out the year. Mary’s become positively skel­etal. You can see it in her face, where the skin has become taut. And she eats very little these days. Mary has severe mobility prob­lems now. Her blood circulation is very poor due to her diabetes. She’s also prone to infections and is at severe risk for a heart attack.”

We can't handle this! We love Mary!

But the fact of the matter is that she was first diagnosed with type 1 diabetes at age 33, and underwent risky surgery last May to re­move a benign brain tumor that had become wrapped around her optic nerve. Then, just two days later, doctors rushed her back into surgery because of bleeding in her brain.

Let's just all hope that for some reason this isn't the case at all, and that she'll be with us a long time yet.